Backend Engineering

Parse /users/:id into typed params at the type level. No codegen, no build step — the compiler reads your routes and checks the call site.

A UserId and an OrderId are both strings, so the compiler lets you swap them. Branded types close that hole for zero runtime cost.

I never gave much thought to where Swagger annotations lived. Wire up springdoc, scatter @Operation...

Table tests, t.Run subtests, and t.Parallel done right in 2026: loop-var semantics, shared state, and cleanup ordering that bites everyone.

Generics beat interfaces for some Go code and add noise to the rest. Type sets, real container and numeric examples, and the compile-time cost.

Three Go slice aliasing bugs that pass tests and ship to prod: re-slice mutation, shared sub-slices, and append capacity surprises.

context.Value turns into a hidden global the moment you put real data in it. Here is the line between context and explicit params, and how to do request scope r

init() runs at import time, hides errors, and breaks tests. Here is when to reach for sync.OnceFunc and OnceValue instead.

errors.Join shipped in Go 1.20 and still gets reinvented. How to join, unwrap, match with Is/As across a join, and when to aggregate vs fail fast.

Learn when Signals shine, where RxJS still dominates, and how Angular 22 makes them work together better than ever. Continue reading on Medium »

Introduction I'm Calvin, a backend engineering intern at HNG, currently wrapping up HNG14. This post...

Great Stack to Doesn't Work — Bonus 10 Bash Scripting Golden Rules Because your...

Rust take-home challenges are a weird middle ground: they are small enough to finish in a weekend,...

Imagine you've written a really useful piece of code and now you need it in 10 different places in...

What looked like a chaotic sprint was actually a strict exercise in architectural discipline. The...

I have a small debugging tool for ASP.NET Core that records requests, the SQL EF Core runs, logs,...

Why Everyone Learns MERN but Most Enterprises Still Use Java Continue reading on Medium »

I created an Active Directory lab on my Windows server 2022 and Windows 11 VM. Here are all the steps and the settings in how I configured… Continue reading on

Introduction In Java, access modifiers control the visibility of classes, methods, and variables....

Most Windows lock apps are a joke. Alt+Tab your way out. Open Task Manager. Kill the process. Done....

Hello Dev Community! 👋 It is officially Day 24 of my journey toward mastering the MERN stack! After...

Every New Project, Same First Hour Continue reading on Medium »

Emoji in customer names, international characters in addresses, and modern marketing copy can break...

Webhooks are usually discussed as something your application should process automatically. A payment...

A production-tested, byte-level masking middleware that catches sensitive data before it leaks — no regex, no handler changes. Continue reading on Medium »

As a developer, I used to think that “more code” meant “more control.” But after spending 6 years teaching at On Time Tech Academy, I’ve… Continue reading on Me

Learn Decision Making with if Conditions Continue reading on Medium »

Databases are the backbone of reliable systems. While SQLite is great for local development, production environments demand a more… Continue reading on Medium »

Databases are the backbone of reliable systems. While SQLite is great for local development, production environments demand a more… Continue reading on Medium »

with the Fetch API and ReadableStream Continue reading on Client-Side JavaScript »

Java ClassLoader is a part of the Java Runtime Environment (JRE) that is responsible for loading Java classes into the Java Virtual… Continue reading on Medium

Hey tech family! 👋 If you’ve noticed your favorite Chrome extensions acting a bit differently lately...

If you have just started learning Verilog, there is a good chance your very first compiler error looked something like “illegal reference… Continue reading on M

Flux is a compiled, stack-first, general-purpose language with a refreshingly direct philosophy: you own your memory, you write your… Continue reading on Medium

Docker Compose facilitates spinning up local AWS-compatible services without an AWS account. This post covers DynamoDB Local for key-value… Continue reading on

Docker Compose facilitates spinning up local AWS-compatible services without an AWS account. This...

Complete guide to building real-time collaborative applications with Next.js and Supabase. Learn presence tracking, live cursors, collaborative editing, real-ti

Ace your next backend interview with these essential questions — and the answers that actually impress Continue reading on Medium »

Ace your next backend interview with these essential questions — and the answers that actually impress Continue reading on Medium »

A friend at a startup pinged me three weeks ago. “We’re starting a new Next.js app and the team is split on Prisma vs Drizzle. We’ve been… Continue reading on M

I want to quickly talk about a small part of Bash scripting that can make a script either easy to read or needlessly painful. I mean the… Continue reading on Me

Picture this: 200 invoices in your inbox, scattered across six months of emails, and accounting needs...

Why these Git commands confuse so many beginners A lot of developers use these commands...

Rux is a fast, compiled, strongly typed, multi-paradigm language currently in active development. Here's a first look at what makes it interesting.

Hello guys , i am a first-year student in Digital Infrastructure , Networks and Security , and for our end of the year project we need to make an application .

In the last article, I wrote about how programs make decisions using conditionals. We went through...

You take a week off. You come back, open the repo, and for about twenty minutes you are a complete...

Hello fellas, i wanted to learn basics of javascript because i hear that minecraft java edition is built on java, but on w3schools it mostly says its for web pa